Home / 22,779.20-31,388.64-16,801.40

Finding the Fourth Proportional to 22,779.20, 31,388.64 and 16,801.40

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Solution

The fourth proportional to 22,779.20, 31,388.64 and 16,801.40 is: 23,151.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,779.20 : 31,388.64 = 16,801.40 : x
  2. Step 2: Convert to fraction form
    22,779.20/31,388.64 = 16,801.40/x
  3. Step 3: Cross multiply
    22,779.20x = 31,388.64 × 16,801.40
  4. Step 4: Simplify right side
    22,779.20x = 527,373,096.10
  5. Step 5: Solve for x
    x = 527,373,096.10/22,779.20
  6. Step 6: Final answer
    x = 23,151.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.